Magnetic properties of ion beam deposited CoPt and CoCrPt films for hard bias application in high density magnetoresistive heads

被引：3

作者：

Leng, Q ^{[1
]}

Mao, M ^{[1
]}

Hiner, C ^{[1
]}

Miloslavsky, L ^{[1
]}

Miller, M ^{[1
]}

Tran, S ^{[1
]}

Qian, C ^{[1
]}

Tong, HC ^{[1
]}

机构：

[1] Read Rite Corp, Fremont, CA 94539 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1999年 / 35卷 / 05期

关键词：

IBD; hard bias film; microstructure; MR recording head;

D O I：

10.1109/20.800888

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have observed a 30% of enhancement in coercivity, H-c, or a 40% increase in remnant magnetization in ion beam deposited (IBD) Cr/CoPt films as compared to IBD Cr/CoCrPt films. In addition, the magnetic properties of these hard bias films exhibit a strong dependence of on substrate and underlayer, Higher coercivity values associated with enhanced hcp Co (10 (1) over bar 0) crystallographic orientation were measured in films grown on substrates in the preference order of glass, Si/Al2O3 and Si. CoPt films grown on CrV underlayer show lower H-c values than films deposited on Cr underlayer, H-c exhibits a maximum with increasing Cr underlayer thickness for both Cr/CoPt and Cr/CoCrPt films. This Cr thickness dependence of H-c is correlated well with that of Co (10 (1) over bar 0)/(0002) x-ray diffraction peak intensity ratio, indicating the role of crystallographic texture in control of coercivity of IBD hard bias films.

引用

页码：2553 / 2555

页数：3

共 10 条

[1] High coercivity CoPtCr, CoPt films deposited at high power and high bias conditions for hard bias applications in magnetoresistive heads [J].

Choe, G ;

Funada, S ;

Tsoukatos, A ;

Gupta, S .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :4894-4896

[2] THE EFFECT OF CR AND W NUCLEATION LAYERS ON THE MAGNETIC-PROPERTIES OF COPT FILMS [J].

HOWARD, JK .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :3263-3265

[3] THE CRYSTALLOGRAPHY AND TEXTURE OF CO-BASED THIN-FILM DEPOSITED ON CR UNDERLAYERS [J].

LAUGHLIN, DE ;

WONG, BY .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (06) :4713-4717

[4]

LENG Q, 1999, IN PRESS J APPL PHYS, V85

[5] OPTIMIZATION OF CO-PT AND CO-CR-PT-TA THIN-FILMS FOR USE IN MAGNETIC DATA-STORAGE DEVICES [J].

MILLER, MS ;

SCHULTZ, AE ;

CHOW, YM ;

HEUER, LA .

SURFACE & COATINGS TECHNOLOGY, 1994, 68 :696-701

[6] EPITAXIAL-GROWTH OF CO/CR BILAYER FILMS ON MGO SINGLE-CRYSTAL SUBSTRATES [J].

NAKAMURA, A ;

FUTAMOTO, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1993, 32 (10A) :L1410-L1413

[7] MICROSTRUCTURES OF CO/CR BILAYER FILMS EPITAXIALLY GROWN ON MGO SINGLE-CRYSTAL SUBSTRATES [J].

NAKAMURA, A ;

KOGUCHI, M ;

FUTAMOTO, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1995, 34 (5A) :2307-2311

[8]

SINGLETON EW, 1998, 43 C MMM MIAM FLOR N

[9] Cr backslash(CoPtCr,CoPtx) layered film studies for hard bias applications [J].

Tsoukatos, A ;

Gupta, S ;

Marx, D .

JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) :5018-5020

[10] INVESTIGATION OF CONICR THIN-FILMS DEPOSITED ON [100] AND [110] CR SINGLE-CRYSTALS [J].

WONG, BY ;

LAUGHLIN, DE ;

LAMBETH, DN .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (06) :4733-4735

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